#A01B21#A01B21

#A01B21 is a mid, vivid red. Relative luminance 0.084; OKLCH L 45.8% C 0.167 H 25.2°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#A01B21
RGB	rgb(160, 27, 33)
HSL	hsl(357, 71%, 37%)
HSV	hsv(357, 83%, 63%)
CMYK	cmyk(0%, 83.1%, 79.4%, 37.3%)
CIE-LAB	lab(34.74, 52.48, 32.56)
CIE-LCH	lch(34.74, 61.76, 31.81°)
OKLab	oklab(45.78% 0.1515 0.0712)
OKLCH	oklch(45.78% 0.167 25.2)
XYZ	xyz(15.1655, 8.3697, 2.2556)
Luminance	0.0837 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A01B21 #1BA09A

analogous

#A01B64 #A01B21 #A0581B

triadic

#A01B21 #21A01B #1B21A0

tetradic

#A01B21 #64A01B #1BA09A #581BA0

square

#A01B21 #64A01B #1BA09A #581BA0

split-complementary

#A01B21 #1BA058 #1B64A0

monochromatic

#37090B #6C1216 #A01B21 #D4242C #E2535A

Accessibility & contrast

On white

7.86

#A01B21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#A01B21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A01B21

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A01B21	#FFFFFF	#000000	##FFFFFF
##A01B21	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#463F20

Deuteranopia (green-blind)

#675C1B

Tritanopia (blue-blind)

#B1001F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #a01b21;
/* rgb */ color: rgb(160, 27, 33);
/* oklch */ color: oklch(45.8% 0.167 25.2);

Tailwind

colors: {
  custom: {
    50: '#c5665d',
    500: '#a01b21',
    950: '#000000',
  },
}

SCSS

$custom: #a01b21;
$custom-light: #c5665d;
$custom-dark: #000000;

JSON

{
  "hex": "#a01b21",
  "rgb": {
    "r": 160,
    "g": 27,
    "b": 33
  },
  "hsl": {
    "h": 357.293,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.45777,
    "c": 0.1674,
    "h": 25.2
  },
  "luminance": 0.08367
}

Semantic roles & 50–950 ramp

primary

#A01B21

secondary

#52C5C0

accent

#EEE63A

background

#FDF6F5

surface

#FAEBE9

border

#D3C6C5

text

#150704

muted

#837A79

Preview Lab

Preview with #A01B21

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →